結果

問題 No.1334 Multiply or Add
ユーザー heno239heno239
提出日時 2021-01-08 22:33:28
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 27 ms / 2,000 ms
コード長 4,471 bytes
コンパイル時間 1,958 ms
コンパイル使用メモリ 143,528 KB
実行使用メモリ 6,200 KB
最終ジャッジ日時 2023-08-10 10:33:53
合計ジャッジ時間 6,145 ms
ジャッジサーバーID
(参考情報)
judge13 / judge11
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 3 ms
5,396 KB
testcase_01 AC 3 ms
5,684 KB
testcase_02 AC 4 ms
5,384 KB
testcase_03 AC 14 ms
5,884 KB
testcase_04 AC 15 ms
6,028 KB
testcase_05 AC 15 ms
5,880 KB
testcase_06 AC 15 ms
6,004 KB
testcase_07 AC 15 ms
6,012 KB
testcase_08 AC 15 ms
5,876 KB
testcase_09 AC 15 ms
5,940 KB
testcase_10 AC 15 ms
6,028 KB
testcase_11 AC 16 ms
5,904 KB
testcase_12 AC 14 ms
5,884 KB
testcase_13 AC 15 ms
5,880 KB
testcase_14 AC 15 ms
5,940 KB
testcase_15 AC 15 ms
5,960 KB
testcase_16 AC 16 ms
5,876 KB
testcase_17 AC 16 ms
5,880 KB
testcase_18 AC 16 ms
6,020 KB
testcase_19 AC 26 ms
5,880 KB
testcase_20 AC 26 ms
6,200 KB
testcase_21 AC 26 ms
5,884 KB
testcase_22 AC 15 ms
6,016 KB
testcase_23 AC 15 ms
5,952 KB
testcase_24 AC 15 ms
5,988 KB
testcase_25 AC 15 ms
5,892 KB
testcase_26 AC 15 ms
5,880 KB
testcase_27 AC 15 ms
5,936 KB
testcase_28 AC 15 ms
5,944 KB
testcase_29 AC 15 ms
5,932 KB
testcase_30 AC 15 ms
5,892 KB
testcase_31 AC 15 ms
6,108 KB
testcase_32 AC 16 ms
5,892 KB
testcase_33 AC 15 ms
6,040 KB
testcase_34 AC 15 ms
6,024 KB
testcase_35 AC 15 ms
5,884 KB
testcase_36 AC 14 ms
6,016 KB
testcase_37 AC 15 ms
5,996 KB
testcase_38 AC 15 ms
5,888 KB
testcase_39 AC 3 ms
5,456 KB
testcase_40 AC 9 ms
5,404 KB
testcase_41 AC 5 ms
5,640 KB
testcase_42 AC 5 ms
5,396 KB
testcase_43 AC 11 ms
5,712 KB
testcase_44 AC 8 ms
5,412 KB
testcase_45 AC 6 ms
5,816 KB
testcase_46 AC 8 ms
5,556 KB
testcase_47 AC 11 ms
5,776 KB
testcase_48 AC 9 ms
5,492 KB
testcase_49 AC 14 ms
5,756 KB
testcase_50 AC 27 ms
5,932 KB
testcase_51 AC 26 ms
5,904 KB
testcase_52 AC 27 ms
5,880 KB
testcase_53 AC 26 ms
6,024 KB
testcase_54 AC 27 ms
6,104 KB
testcase_55 AC 27 ms
5,948 KB
testcase_56 AC 3 ms
5,412 KB
testcase_57 AC 4 ms
5,396 KB
testcase_58 AC 4 ms
5,392 KB
testcase_59 AC 3 ms
5,524 KB
testcase_60 AC 4 ms
5,392 KB
testcase_61 AC 4 ms
5,520 KB
testcase_62 AC 4 ms
5,740 KB
testcase_63 AC 4 ms
5,468 KB
testcase_64 AC 3 ms
5,396 KB
testcase_65 AC 4 ms
5,416 KB
testcase_66 AC 23 ms
5,772 KB
testcase_67 AC 16 ms
5,416 KB
testcase_68 AC 4 ms
5,652 KB
testcase_69 AC 25 ms
6,044 KB
testcase_70 AC 24 ms
5,616 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#pragma GCC optimize("Ofast")
//#pragma GCC target ("sse4")

#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<unordered_set>
#include<utility>
#include<cassert>
#include<complex>
#include<numeric>
#include<array>
using namespace std;

//#define int long long
typedef long long ll;

typedef unsigned long long ul;
typedef unsigned int ui;
constexpr ll mod = 1000000007;
const ll INF = mod * mod;
typedef pair<int, int>P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
#define all(v) (v).begin(),(v).end()
typedef pair<ll, ll> LP;
typedef double ld;
typedef pair<ld, ld> LDP;
const ld eps = 1e-12;
const ld pi = acosl(-1.0);

ll mod_pow(ll x, ll n, ll m = mod) {
	if (n < 0) {
		ll res = mod_pow(x, -n, m);
		return mod_pow(res, m - 2, m);
	}
	if (abs(x) >= m)x %= m;
	if (x < 0)x += m;
	ll res = 1;
	while (n) {
		if (n & 1)res = res * x % m;
		x = x * x % m; n >>= 1;
	}
	return res;
}
struct modint {
	ll n;
	modint() :n(0) { ; }
	modint(ll m) :n(m) {
		if (n >= mod)n %= mod;
		else if (n < 0)n = (n % mod + mod) % mod;
	}
	operator int() { return n; }
};
bool operator==(modint a, modint b) { return a.n == b.n; }
modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; }
modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; }
modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; }
modint operator+(modint a, modint b) { return a += b; }
modint operator-(modint a, modint b) { return a -= b; }
modint operator*(modint a, modint b) { return a *= b; }
modint operator^(modint a, ll n) {
	if (n == 0)return modint(1);
	modint res = (a * a) ^ (n / 2);
	if (n % 2)res = res * a;
	return res;
}

ll inv(ll a, ll p) {
	return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p);
}
modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); }
modint operator/=(modint& a, modint b) { a = a / b; return a; }
const int max_n = 1 << 17;
modint fact[max_n], factinv[max_n];
void init_f() {
	fact[0] = modint(1);
	for (int i = 0; i < max_n - 1; i++) {
		fact[i + 1] = fact[i] * modint(i + 1);
	}
	factinv[max_n - 1] = modint(1) / fact[max_n - 1];
	for (int i = max_n - 2; i >= 0; i--) {
		factinv[i] = factinv[i + 1] * modint(i + 1);
	}
}
modint comb(int a, int b) {
	if (a < 0 || b < 0 || a < b)return 0;
	return fact[a] * factinv[b] * factinv[a - b];
}
modint combP(int a, int b) {
	if (a < 0 || b < 0 || a < b)return 0;
	return fact[a] * factinv[a - b];
}

void solve() {
	int n; cin >> n;
	vector<int> a(n);
	rep(i, n)cin >> a[i];
	ll pro = 1;
	rep(i, n) {
		pro *= a[i];
		pro = min(pro, mod);
	}
	if (pro > (1 << 20)) {
		modint ans = 0;
		rep(i, n) {
			if (a[i] != 1)break;
			ans += 1;
		}
		per(i, n){
			if (a[i] != 1)break;
			ans += 1;
		}
		modint ex = 1;
		rep(i, n) {
			ex *= a[i];
		}
		ans += ex;
		cout << ans << "\n";
	}
	else {
		vector<int> cnt;
		int l = 0, r = n-1;
		while (l < n && a[l] == 1)l++;
		if (l == n) {
			cout << n << "\n"; return;
		}
		while (r >= 0 && a[r] == 1)r--;
		modint ans = l + (n - 1 - r);
		vector<ll> pros;
		vector<int> cnts;
		Rep(i, l, r + 1) {
			int le = i;
			if (a[i] == 1) {
				while (i + 1 <= r && a[i + 1] == 1)i++;
				cnts.push_back(i - le + 1);
			}
			else {
				while (i + 1 <= r && a[i + 1] > 1)i++;
				ll pro = 1;
				for (int j = le; j <= i; j++) {
					pro *= a[j];
				}
				pros.push_back(pro);
			}
		}
		int len = cnts.size();
		//rep(i, len + 1)cout << pros[i] << "\n";
		ll ma = 0;
		rep(j, (1 << len)) {
			ll sum = 0;
			int le = 0;
			rep(k, len) {
				if (j & (1 << k)) {
					//[le,k]
					ll pro = 1;
					Rep1(t, le, k)pro *= pros[t];
					le = k + 1;
					sum += pro;
					sum += cnts[k];
				}
			}
			ll pro = 1; Rep1(t, le, len)pro *= pros[t];
			sum += pro;
			ma = max(ma, sum);
		}
		ans += ma;
		cout << ans << "\n";
	}
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	//cout << fixed << setprecision(15);
	//init_f();
	//init();
	//expr();
	//int t; cin >> t; rep(i, t)
	solve();
	return 0;
}
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